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serial: handle arbitrary amounts of <CR><LF> padding in responses

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Firmware on some Option devices (iCON 505) likes to spray newlines
all over the place.  Some fixes and boundary checks by me (dcbw).
This commit is contained in:
Jeroen Elebaut
2009-11-24 15:36:32 -08:00
committed by Dan Williams
parent 50412ba3f9
commit 19e9c0cb48
1 changed files with 9 additions and 5 deletions
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14
src/mm-serial-parsers.c
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@@ -26,15 +26,19 @@ response_clean (GString *response)
{
char *s;
/* Ends with '<CR><LF>' */
/* Ends with one or more '<CR><LF>' */
s = response->str + response->len - 1;
if (*s == '\n' && *(--s) == '\r')
while ((s > response->str) && (*s == '\n') && (*(s - 1) == '\r')) {
g_string_truncate (response, response->len - 2);
s -= 2;
}
/* Starts with '<CR><LF>' */
/* Starts with one or more '<CR><LF>' */
s = response->str;
if (*s == '\r' && *(++s) == '\n')
while ((response->len >= 2) && (*s == '\r') && (*(s + 1) == '\n')) {
g_string_erase (response, 0, 2);
s = response->str;
}
}
@@ -199,7 +203,7 @@ mm_serial_parser_v1_new (void)
parser = g_slice_new (MMSerialParserV1);
parser->regex_ok = g_regex_new ("\\r\\nOK\\r\\n$", flags, 0, NULL);
parser->regex_ok = g_regex_new ("\\r\\nOK(\\r\\n)+$", flags, 0, NULL);
parser->regex_connect = g_regex_new ("\\r\\nCONNECT.*\\r\\n", flags, 0, NULL);
parser->regex_detailed_error = g_regex_new ("\\r\\n\\+CME ERROR: (\\d+)\\r\\n$", flags, 0, NULL);
parser->regex_unknown_error = g_regex_new ("\\r\\n(ERROR)|(COMMAND NOT SUPPORT)\\r\\n$", flags, 0, NULL);